Question

( 2x + y = 5(3x+2y = 12​

Answer 1

2х=12+3у

х=6+1,5у

3(6+1,5у)+2у=5

18+4,5у+2у=5

6,5у=5-18

6,5у=-13

у=-2

х=6+1,5*(-2)=3

Answer 2

It looks like you have a system of two linear equations with two variables, x and y. You can solve this system of equations using various methods, such as substitution or elimination. Let's use the elimination method:

Given the system of equations:

1. 2x + y = 5
2. 3x + 2y = 12

First, we can multiply the first equation by 2 to make the coefficients of y in both equations equal:

1. 4x + 2y = 10

Now, you can subtract the second equation from the modified first equation to eliminate y:

(4x + 2y) - (3x + 2y) = 10 - 12

This simplifies to:

4x + 2y - 3x - 2y = -2

Now, combine like terms:

(4x - 3x) + (2y - 2y) = -2

x = -2

Now that you have found the value of x, you can substitute it back into either of the original equations to solve for y. Let's use the first equation:

2x + y = 5 2(-2) + y = 5

-4 + y = 5

Add 4 to both sides:

y = 5 + 4 y = 9

So, the solution to the system of equations is x = -2 and y = 9.